6814 Suchergebnisse für: „“
Paramagnetic Mn-implanted amorphous Si
Different fluences of Mn ions have been implanted into 200 nm thick, n-type conducting amorphous Si films on a cold stage cooled by liquid N2 with a Mn concentration in MnxSi1-x ranging from x = 0.0006...
PublikationenCharacterization and local magnetic modification of ion irradiated GaMnAs
We study the influence of ion irradiation on magnetic, magneto-transport and structural properties in Ga0.94Mn0.06As films. The carrier concentration is accurately controlled by defects introduced via...
PublikationenMagnetic force microscopy studies on the magnetic ordering in organic materials induced by high-energy proton irradiation
In this study, ferromagnetic microstructures in highly oriented pyrolytic graphite and superparamagnetic spots in polyimide foils were created by 2.25 MeV proton microbeam irradiation and characterized...
PublikationenMagnetic carbon: A new application for ion microbeams
In this study ferromagnetic microstructures in highly oriented pyrolytic graphite (HOPG) were created by 2.25 MeV proton microbeam irradiation and characterized using AFM/MFM and SQUID measurements. For...
PublikationenInverse spinel ZnFe2O4 nanoparticles synthesized by ion implantation and post-annealing: An investigation using X-ray spectroscopy and magneto-transport
Noncrystalline ZnFe2O4 has been investigated intensively due to the drastic difference in cation distribution compared with bulk materials. We previously synthesized ZnFe2O4 nanoparticles by ion implantation...
PublikationenThe influence of annealing on manganese implanted GaAs films
Besides low-temperature molecular beam epitaxy, ion implantation provides an alternative route to incorporate Mn into GaAs above the equilibrium solubility limit. Recently, Mn implanted GaAs diluted magnetic...
PublikationenBipolar resistive switching in YMnO3/Nb: SrTiO3 pn-heterojunctions
Resistively switching oxides are promising materials for use in electronic applications such as nonvolatile memories, logic gates, and artificial synapses. This work presents the bipolar resistive switching...
PublikationenIon beam-induced shaping of Ni nanoparticles embedded in a silica matrix: from spherical to prolate shape
Present work reports the elongation of spherical Ni nanoparticles (NPs) parallel to each other, due to bombardment with 120 MeV Au+9 ions at a fluence of 5 × 1013 ions/cm2. The Ni NPs embedded in silica...
Publikationenn-InAs Nanopyramids Fully Integrated into Silicon
InAs with an extremely high electron mobility (up to 40 000 cm2/V s) seems to be the most suitable candidate for better electronic devices performance. Here we present a synthesis of inverted crystalline...
PublikationenGrowth and characterization of Mn- and Co-doped ZnO nanowires
We report on the high-pressure pulsed laser deposition growth of zinc oxide nanowires containing about 0.2 at.% Co and 0.5 at.% Mn by NiO and Au catalyst. Scanning electron microscopy and X-ray diffraction...
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